1. Jeffrey S. Morris is Associate Professor and Richard Herrick is Software Engineer, Department of Biostatistics & Applied Mathematics, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030. Cassandra Arroyo is Research Instructor, Social Epidemiology Research Division, Morehouse School of Medicine, Atlanta, GA 30310. Brent A. Coull is Associate Professor, Department of Biostatistics, Louise M. Ryan is Professor, Department of Biostatistics, and Steven L. Gortmaker is Professor, Faculty...